It's great to "meet" you! Magento certifications are tough. Not only do they cover a platform that has over 1 million lines of code, they are also tough. Even the "easiest" test (Professional Developer) isn't easy.
Not only has Joseph has assisted in writing + updating the certifications, he has helped thousands of people in 79 countries (probably more) achieve their certification status. The result is higher income, better reputation in the workplace and the ability to solve more difficult problems. Our approach is very practical: each course provides hands-on instruction with very useful modules.